Since 25% were senior citizens, 75% were younger. The ratio of senior citizens to younger fans was 25%:75%. To reduce the ratio, divide both numbers by 25%.
25% ÷ 25% = 1 and 75% ÷ 25% = 3.
So the ratio is 1:3.
A beverage manufacturer would like to test the reliability of two processes for manufacturing orange juice and apple cider, respectively. A review of the orange juice manufacturing process found that 10% of the bottles are underfilled. A review of the apple cider manufacturing process found that 15% of the bottles are underfilled.
|Orange Juice||Apple Cider|
|Probability of under-fill||0.10||0.15|
If two cans are selected at random (one from each process), what is the probability of selecting one under filled orange juice bottle and one under filled apple cider bottle?